#证明#(A|B)=#A+#B
import _00SetFunc as sf

A=sf.createset(50,25)
B=sf.createset(50,20)
A=A-(A&B)
print("A,B",A,B)
tv=len(A|B)==(len(A)+len(B))
print("#(A|B)=#A+#B",tv)
